Ghost Rider Damnation Vs. The Champion

When defending or attacking the final node of a quest, The Chpion is immune to heal block, petrify and fate seal effects).

Ghost Rider special 3 places a Damnation on the enemy, which acts like an heal block, fate seal and power lock effects.

As of today, I found that Damnation actually works against The Champion, nullifying his buffs like if he wasn't immune to it.

In the past, Damnation was fixed in order to counter Sabretooth's passive regens, since they can be nullified by heal block effects, which is part of the Damnation ability. So I don't see why this, being also a fate seal effect, is able to counter The Champion immunity to it. It seems broken or whatever.

Hey there, would you be able to let me know if the Champion was Awakened during the fights where you saw this? If so, would you be able to tell me what his Signature level was and who he was fighting?

It was back in November during his monthly quest. As well as in the Champion challenge and The Maze quest.
In all of them, The Champion was the final boss, and awakened. In all of them, Ghost Rider was able to nullify his buffs (fury's, unstoppable, indestructible, armor and even the regen) with his Fate Seal mechanic on the Special 3, as well as avoiding the next buffs from triggering.